2788925 has 12 divisors (see below), whose sum is σ = 3479316. Its totient is φ = 2217600.

The previous prime is 2788889. The next prime is 2788927. The reversal of 2788925 is 5298872.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 3364 + 2785561 = 58^2 + 1669^2 .

It is not a de Polignac number, because 2788925 - 2¹⁸ = 2526781 is a prime.

It is a d-powerful number, because it can be written as 2¹⁰ + 7⁷ + 8² + 8³ + 9⁴ + 2¹² + 5⁹ .

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2788927) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6827 + ... + 7223.

It is an arithmetic number, because the mean of its divisors is an integer number (289943).

2^2788925 is an apocalyptic number.

2788925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2788925 is a deficient number, since it is larger than the sum of its proper divisors (690391).

2788925 is a wasteful number, since it uses less digits than its factorization.

2788925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688 (or 683 counting only the distinct ones).

The product of its digits is 80640, while the sum is 41.

The square root of 2788925 is about 1670.0074850132. The cubic root of 2788925 is about 140.7598985369.

It can be divided in two parts, 27889 and 25, that multiplied together give a square (697225 = 835²).

The spelling of 2788925 in words is "two million, seven hundred eighty-eight thousand, nine hundred twenty-five".